Catatonic syndrome and neuroleptic malignant syndrome

Several clinical reports suggest that neuroleptic malignant syndrome (NMS) is not a distinct clinical entity but an acute form of catatonic syndrome (CS). They both share many clinical features and it is impossible to differentiate them on the basis of biochemical findings. Both respond similarly to treatment. The article describes some case reports from the literature and our own case report of NMS as a form of CS.